There is a key difference here between your friend's job and UBI. If your friend instead of having their job got UBI they would still be able to go and find fullfilment in the workforce and bolster what they recieve from UBI with a salary.
In the scenario you mentioned they are probably locked in by way of a contract from being able to find fillfilment unless they do it in their, probably small, amount of personal time.
It looks like you're able to do a similar thing with their batching method to make using it cheaper. Re-read your peep before it gets pushed to the chain and you'll be able to delete them there.